Friendly challenges need a little change if not in a war

I think if your clan isn't in a war you shouldn't have the 24 hr cool down everytime u make a change to your bases. But if your clan starts one the whole clan has the 24 hrs cool down start up again. It would give you a chance to make minor tweaks to your bases without having to wait for the 24 hrs to expire or await until you get attacked to see how your base dose on defense.

The problem with this idea is that you could then have someone outside of your clan build the base you are facing and practice against it using that. Toss in the possibility that someone uses a burner account and mods the base and thats why this idea wouldn't work.